Gage-cock.



G. J. HATZ. GAGE COCK. APPLICATION FILED SH12?, 1912A Patented Jan. 21, 1913.

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GEORGE J. BLATZ, F OMAHA, NBRASKA, A'SSIGNOB 0F ONE-HALF T0 CHLES E.

FULLER, 0F QMAHA, NEBRAS GAGE-COCK.

To all whom z't may concern:

Be it known that I, GEORGE J. HA'rz, a citizen of the United States, residing at Omaha, in the county of Douglas, State of Nebraska, have invented certain new and useful Improvements in Gage-Cocks, of which I do declarei the following to be a full, clear, and exact description, reference being had to the accompanying drawing,

orming part of this specification.

y present invention, while susceptible of use in whole or in part in a variety of situations, is designed to provide a gage cock especially applicable for use upon locomotive engine boilers.

The invention consists in the various :novel features of improvement hereinafter illustrated in the accompanying drawings and particularly pointed out in the claims at the end of this specification.

Figure 1 is a view in central longitudinal section (parts .being shown in elevation) through a gage cock embodying mv invention. Fig. 2 is a view in vertical cross-secdescribed,

tion on line 2 2 of Fig. 1. Fig. 3 is a view in Vertical cross-section on line 3 3 of Fig. l. Fig. 4 is an outer end view.

The plug of my improved gage cock comprises a threaded portion 1 adapted to be screwed into a correspondingly threaded opening in the boiler in the usual manner, this plug being formed with a hexagonal portion 2 to receive a suitable wrench. Adjaoent'the hexagonal portion 2 .the plug is preferably reduced in diameter and formed with the exteriorly screw threaded portion 3 adapted to be engaged by the interiorly threaded inner end portion 1 of the chambered body of the gage cock. Integral with the plug at' its outer end is formed an extension 5 having at its end a conoidalshaped valve .seat 6, and extending from end to end of theplug is formed the central channel or passageway 7 for steam or water.

In the chambered spherical portion'S of the body of the gage cock is formed a threaded opening into which fits the correspondingly threaded portion .9 of the usual nipple 101 Preferably, the conoidal valve seat 6 terminates within the spherical chambered portion of the body of the'gage cock and at a point approximately opposite 'the nipple outlet, as with this arrangement the danger of any obstruction is materially Specication of Letters Patent. Application led September 27, 1912. .Serial No. 722,616.

'25 and the Patenten @11.21.1913.

and is enga ed by a correspondingly interiorly threa ed, chambered cap or bonnet 13 having an outwardly extending part 14 provided with a hand wheel 15. This hand wheel 15 is formed with a peripheral groove 16 within which is sprung and securely held an annular grip or handle 17 of soft or dexible rubber. This annular rubber grip or handle 17 adords an exceedingly effective means for manipulating the cock as it does not become overheated and under the hand of the operator takes a iirm grip uponthe perlphery of the hand wheel 15.

Through the extended portion 14 of bon-r net 13 passes the reduced stem 20 ofa chambered valve 21 that engages the conoidal seat 6 of the cock. The outer end of the valve stem 2O is vformed with a threaded portion 22 that is engaged by a threaded nut 23, and the extreme end of the valve "stem is provided with a slot 24, the purpose of which will presently more fully appear.' The valve stem 20 is encircled by a sleeve 25, preferably of metal and between this sleeve body portion of the valve 21 is placed a packing ring 26 of fiber, soft metal or other suitable materia-l, this packing ring 26 encircling the inner portion of the vvalve stem 20. The purpose of the packing ring 26 is to form a tight joint w1th the inner wall of the outer cylindrical portion of the body of the cockl and thus avoid danger of leallrage through the outer. end portion of the coc The chambered body of the valve 2l is preferably furnished with a lining 28 of Babbittmetal or other suitable material that .can be replaced and renewed from time to tlme, as required, and to more effectively hold this Alining 28 within the chambered portion ofthe valve 21, annular grooves or seats are formed around the inner surface of the chamber of the valve 21 to receive the projecting portions 29 of the lining 28. The

linlng 28 of the valve is formed with a v chamber 30 into which steam Lor water .will

discharge from the passageway 7 through the valve seat 6, and this chamber 30 will serve etliciently to prevent all sputtering H0 '45 screws into the boiler. Hence, should an enacts as a piston within the cylindrical outer portion of the bod. of the cock and the necessity for any urther packing around the valve is avoided.

The. valve stem and the body of the valve can be made of steel, iron or other suitable metal and inasmuch as the lining of Babbitt or other suitable metal is Vheld within the at the nipple outlet as the force of the steam or water is broken by passage into the chamber 30 and thence' in backward course into the spherical body of the body portion 8 of tle cock and through the outlet of the nipe 10. I) 'Ihe inner end of the valve 21 is formed with an exterior collar or shoulder 31 and preferably the body portion of the cock is 10' formed with an annular chamber 32 to re- -ceive thisshoulder 31, the shoulder 33 on the interior of the body portion of the cock serving to limit the outward movement of the valve when the shoulder or collar 31 contacts 'with the shoulder 33.

' By reference to Fig. 1 of the drawing, it will be'seen that there is a-clearance space 35A (preferably about 1/64thjof an inch) between'the nut 23 and the outer end portion- 14 of the bonnet 13. The purpose of this is to enable the handle 15 to be turned slightly (about one-half a revolution) before it engages the inner face of the nut 23. By this arrangement the loosening of the bonnet 13 by turning the hand wheel 15 releases the pressure holding the valve 21 onto -the seat 6 Without turning the valve upon its seat. If, however, the valve sticks to the seat, the engagement of the outer portion 14 of the bonnet with the nut 23 will promptly pull the valve 21 away from the seat 6. This is a very advantageous feature, as it effectively avoids the cutting of the valve seat. y

By-forming the chambered valve 21 with a lining of Babbitt metal or similar material, this lining can be readily renewed Without destroying the valve stem, thus materia-ily prolonging the life of the gage cock.

Inasmuch as the valve 21 is provided at its inner end with a collar 31, it will be imssible to remove the valve stem or valvewithout separating the main body of the gage cock from the plug or nipple which ing being squeezed out by seatingv or unseating the valve is avoided, since the more pressure that is put on the lining, the tighter it will be held within the shell of the valve. Moreover, as-the valve stem 20 is securely incased and guided, all danger of this stem being broken or distorted is effectively guarded against. A

A most important feature vof my improved gage cock is that in case the valve should leak, it can be ground without blowing the ressure o'f the boiler. This can be accomplished by irst removing the nut 23 from the end of thelvalve stem, then drawing the bonnet 13 back just enough to slacken or loosen the valve from the seat, after which a screw driver or like implement can be inyserted in the notch 24 at the outer end of the valve stem and the valve canbe rotated on its seat to eectively grind it. In practice, there will be found that there is enough grit or foreign matter in the water to grind where a lining of Babbitt4 metal, copper,

be any particles of scale under' the seat, they can alsov be worked out in this manner.

My invention will be found to possess many advantageous features of novelty that will readily appeal to those familiar with Athis class of devices.

I wish it distinctly understood that while I have described what I regard as the preferred form of my invention, the precise details above set out may be varied without departing from the spirit of the invention and features of the invention may be employed without its adoption as an entirety.

Having thus described my invention what gineer remove the bonnet 13 for the purpose of oiling the parts, still all danger of the valve stem blowing out is effectively guarded against. In fact, there is lno way in which the valve may be removed, except by first separating the main body of the gage cock from the plug or nipple that screws into the boiler.- It will be observed that the conoidal valve seat 6 is made of such ample length that it can be readily ground or reamed off as wear occurs and without the necessity of renewing the plug or nipple of which it forms a part. Inasmuch as Ythe bodyof the valve 21 is cylindrical and of large diameter and snugly tits within the cylindrical outer portion of the body of the-l gage cock, a comparatively tight joint formed against the escape of steam or water, and anyl such escape is effectively prevented by the packing ring 26. In effect, the valve ters Patent, is

a passageway` therethrough and l`having an elongated outer portion provided with a valve seat at its end, a chambered bodyportion engaging said plug and provided with a discharge opening, a valve for engaging said valve seat, said valve having an unobstructed chamber opposite the passageway of the plug, and extending outwardly from the seat engaging surface of the valve, and means for operating said valve. v

2. A gage cock comprising a plug having a passageway therethrough and having its .'outer portion provided with a valve seat at its end, a chambered body portion engagchamber of the valve, all danger of the linthe valve seat without the use of emery lead or like soft metal is used, and if there I I claim as new and desire to secure by Let- 1. A gage cock comprising a plug having d ing said plug and provided with a discharge opening, a valve for engaging said valve seat, said valve having an unobstructed, elongated chamber extending outwardly from the seat engaging surface of the valve and opposite the passageway of the plug, the inner end of .said valve chamber being shaped to fit over the valve seat and means for `operating said valve.

3. A gage cock comprising a plug having a' passageway therethrough and having its outer portion provided with av valve seat at its outer end, a chambered body portion engaging said plug, a valve for engaging said valve seat and having an unobstructed, elongated chamber extending outwardly 'from the seat engaging surface of the valve opposite the end of the passageway of the plug, and a cylindrical lining arranged within the chamber of the valve, said lining having its inner end beveled to engage the correspondingly beveled exterior surface of the valve seat and means for operating said valve.

. A gage cock comprising a plug having a vpassageway therethrough and an outer portion providedlwith a conoidal' valve seat at its end, a chambered body portion engaging said plug and provided with a discharge opening, a chambered valve formed with an unobstructed chamber exitending outwardly opposite the passageway of the plug, said chamber having its inner end shaped to engage said conoidal valve seat and means for operating said valve.

5. A gagel cock comprising a plug having a passageway therethrough and having a valve seat at its outer end, a chambered body portion engaging said plug and provided with a discharge opening, said chambered body portion being provided with a cylindrical interior surface adjacent its outer end, a valve having a cylindrical exterior surface itting the correspondingly cylindrical porl tion of said chambered body whereby an at the outer end of said initial straight line movement of the valve is permitted, a bonnet in threaded engagement with said body portion, said valve having a stern passing through said bonnet and means valve stem for engagement with said bonnet after an initial movement of said bonnet has occurred. l

6. A gage cockcomprising a plug having a passageway. therethrough and having its outer portion provided with a valve seat, a chambered body portion engaging said plug and provided with a discharge opening, a valve for engaging said valve seat and having an outwardly projecting valve stem, a screw threaded bonnet through which said valve stem passes, said bonnet being in threaded engagement with said chamberedV means whereby said bonnet body portion,

and means at the outer end may be turned of said valve stem :for engagement with said bonnet.

having a lining' 7. A gage cock comprising a plug having a passageway therethrough and having its outer portion provided with a valve seat, 'a chambered body portion engaging said plug and' provided with aV discharge opening, a

valve adapted to engagetsaid valve seat and' within the Y having a cylindrical body -tting corresponding cylindrical portion of said chambered body, a stem for said valve, a bonnet in screw threaded engagement with said body port-ion and havmg an. opening through which said valve stern passes and a and a screw threaded bonnet through whichl said valve stem passes, said bonnet being provided with means whereby it may be turned and said valve stem being provided with means for enga ement with sai bonnet. f

9. A gage cock comprising a plug having a passageway therethrough and having a valve seat at its outer end, a chambered body portion engaging said plug and provided with a discharge opening, a valve engaging said valve seat and having an outwardly projecting stem, a sleeve encircling said valve stem, a packing ring also encircling said valve stem-between said sleeve `and the valve, (said packing ring and sleeve being arranged within the cylindrical part of said body portion) and a screw threaded bonnet through which said valve stem passes, said bonnet being provided with means whereby it may be turned and said valve stem being provided with means for engagement with said bonnet.

I 10. A gage cock comprising a plug having a passageway therethrough and having a gaging said plug and provided with a discharge opening, seat and having a projecting stem provided at its outer end with a threaded portion, a screw threaded bonnet through which said valye passes, a nut engagingthe. threaded outer 'end of the valve stem adjacent said bonnet and. means whereby be turned to shift said valve.

ll. A gage cock comprising a plug having a passageway therethrough and having a valve seat, a chambered body portion engagingsaid plug and provided with a discharge opening, a valve engaging said valvev seat valve seat, a chambered body portion en-.

a valve engaging said valve said bonnet may I turned to' grind opening,

drical portion of the l 2Lvalve may occur, said valve having an offand having a projecting stem provided at its outer end with a threaded portion, and with means whereby the valve may be the same, a screw threaded which said valve passes, a the threaded outer end of the said bonnet and means whereby said bonnet may be turned to shift. said valve.

12. A gage cock comprising a plug having a passageway therethrough and having a valve seat, a chambered body portion engaging said plug and provided with a discharge said body portion having an interior, cylindrical surface, a valve engaging said valve seat and having 'an exterior cylindrical surface fitting within said cylin-L chambered body wherebyan initial straight line movement of the set or shoulder pro]ecting beyond said c 1 with a llindrical surface of said body portion to outward direcprevent said valve passing in tion through said body portion and means for operating said valve.

13. A gage cock comprising a plug having a passagewa therethrough and having a valve seat at lts outer end, a chambered body portion engaging said plug and provide discharge opening, a valve engaging said valve seat and havin at its inner end a shoulder adapted to con act with a shoulder on the interior of said body portion and so prevent the withdrawal of said valve 1n outward direction through said body portion, a stem for said valve, a screw threaded bonnet through which said\ stem passes, means whereby said bonnet may be turned and means whereby said valvestem may be shifted by said bonnet.

` GEORGE J. HATZ.

Witnesses:

. .CORNELIUS J. CAREY,

JAMES T. BAnRErr. 

